Pull switch candelabrum socket



Sept. 1, 1931. c. M. PETERSEN PULL SWITCH CANDELABRUM SOCKET Filed April20, 1928 2 Sheets-Sheet 1 W/rA/EssEs Z21: Petersen,

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P 3 c. M. PETERSEN 1,821,030

PULL SWITCH CANDELABRUM SOCKET Filed April 20, 1928 2 Sheets-Sheet 2Qwwnfoz I C'arZMPeier-sen, 4

' 35 ings and set forth in the Patented Sept. l, 1931 'YUNITED TATESPATENT OFFICE cam. -1=ETEEsEN,'oE TaENroN, NEW JERSEY, ASSIGNOR r CIRCLEE 1 'TRENTCN, NEW JERSEY, a CORPORATION OF NEW JERSEY I MFG. (30., OF

ZPULL SWITCH CAN'DELABRUM SOCKET Application filed April 20, 1928.Serial No. 271,513.

. This invention relates to a novel structure for candelabrum sockets ofthe pull switch type and has for its primary object a facile assembly ofparts which simplifies 1. and cheapens the manufacture of the articleand involves novel structural features of practical importance in theart. The improvements contemplated are especially designed for use in ascrewless-type structure wherein the entire assembly may be made withoutthe use of any screws or separate fastening devices, and all of the pullswitch mechanism may also be mounted without the use of screws asfastening means and carried as an entirety by oneof the sections of theinsulating socket body so that in the act of assembling the parts themovement of the insulating. body'section causes the body and screw shellto come into direct interlocking an engagement and the entire switchbecomes housed within the socket body in its operative position. V T

Another object of the invention is to'provide for a convenient andselective position i of the pull chainso that it may be guided in any ofseveral positions according to the situation met in the house orbuilding where the socket is installed. I y

' 'With these and other objects in view which will more readily appearto those familiar withthe art as the inventionisbetter understoodindetail, thesame consists in the novel construction, combination andarrangement of. parts shown inthe accompanying drawiollo'wingdescription and claims. g V The essential features of the inventionnecessarily are susceptible of 'modification without departing fromthespirit or scope 40 of the invention. but aipreferred and practicalembodiment thereof are shown in the accompanying drawings, wherein:.Figure 1 is a side elevation of a pul switch candelabrum socketconstructed in aceordance with the present invention.

,Figure 2 is another elevation from a different side ofthe socket fromthat shown in i Figure 3-is a sectional view of the socket on the line33 of Fig; 1.

Figure 4 is a sectional view of the socket on the line 44 of Fig. 2.

F igurefi is an inside face view of one of the sections of the socketbody with theswitch assembly removed from said block and exposing thefixed spring contacts. 7

Figure 6 is an end view of the socket body with the screw shell contactremoved.

Figure 7 is an end view of the screw shell contact exposing the lockinghole therein.

Figure 8 is a detail view illustrating the relative arrangement of theparts to provide the locking together of the socket body and the screwshell in the act of assembling these parts.

Figure 9 is a sectional elevation of a complete candelabrum fixtureshowing one of the preferred applications of the invention.

The novel candelabrum socket, representing the present inventionincludes in its general Organization a socket body B of porcelain or'other insulated material, a screw 7 gated form to adapt it for a.candelabrum socket and except for the recessing to provide for thehousing of the switch mechanism S and the seating a few detail elements,is of a solid formation so as to give stability and strength to theentire structure, and asindicated, the same is of a separabletwopartconstruction, the separate sections 22 thereof having inner flat faces3- 3 which solidly abut when the said sections are assembled and inmatching relation. As more clearly shown-in Fig 3 of the drawings thesameend of the socket body B each section thereof is provided with anunder-cut catch hook 44 in registering relation with the similar catchhook of the other section in order to provide a divided two-partrectangular lock lug L. This lock lug is adapted to project through andinterlock with the rectangular locking hole 5 cut into the base orbottom 6 of the screw shell contact C.

drawings; insertingthe catch hooks 4-4 as thus brought to. closerrelation through the locking hole 5 of the screw shell contact, and

' thenmoving the body sections into the solid abutting Contact asshownin Fig. 3. This results in bringing the under-cut portions of thecatch hooks 4-4 over opposite edges of the hole 5, thereby securelylocking the parts togetherso that the screw shell contact cannot beremoved from the socket body without reversing the operation justdescribed. To

retain the two sectionsof the base block in thisfinal relation asuitable retaining means is employed, such for instance as the re tamermember R consist ng of a one-piece yoke orbrackethaving the oppositeside arms 77 and a connecting end member '8, the latter member havingthe attachingopening 9 facilitating the attachment of the socket to thehouse fixture. The said side arms 7-7 of the retainer or retainingmember. B have their ends seated in the recessed seats 10jinthe oppositebody sections 2-2 at one end thereof, and such ends of said sidearms areconnected'b'y a through i screw llpassing through the alined screwopening's12in the said body sections.

A cha racteristic improvement provided by thepresent invention is thatof mounting the entire switch mechanism on one of the body sections 2 sothat such switch mechanism is "supportedand held in operativerelation'by such section and not disturbed in such relation bythemovement of the two body sections either in the locking or unlockingoperation with the screw shell contact. This switch mechanismpret'e'rablyin- V cludes a ratchetjtype rotor r mounted on a.

switch axle 13, wh0se ends extend into the i axle openings 14: and 15respectivelyin the opposite bodysections2- 2, the smaller hole 15 beingin the body section which carries the whole switch assembly and attheouter side of which hole the said'body section is countersunk as at16' to accommodate the flattened holding'head 17"of the said axle 13.This flattened holdinghead'l! is adapted to be seated, when turned in aposition at right angles to that shownin Fig. 1 of the drawings, in thelocking seats 1818provided in the bottom of the countersink 16: and whenturned to the positionshown in Fig. 1 in line with the longitudinal axisof the socket will permit a ready attachment of the whole switchassembly;

The rotor? is of the ratchet type including the usual tensioning spring19 on the axle at one side thereof and carrying at its opposite side thedouble switch arm 19 adapted to have a ratchet engagement with theoppositely disposed fixed switch-contacts 20 and 21, both of which fixedcontacts are preferably fastened to the same body block 2 by eyelet orequivalent tixed fastening elements 22 thereby dispensing with the useof screws at these points.

The fixed switch contact 20 isconnected directlyby its eyelet fastening22 with the outside binding terminal 23 seated in a terminal recess 24in the outside of one of the body sections 2 and carrying the usualbinding screw 25. The other 'fixed' switch contact 21 which is fastenedto the said body section 2 is preferably held by its eyelet fastening 22to the inside arm 26 ofthe center plug fastening 27 consisting of asingle bent plate or strip held within'the holding groove 28 formed inthe upper end of one'of the body sections 2 and having one end enlargedand exposed within the screw shell to form the actual center plugcontact. The electrical circuit is completed by the second bindingterminal 29 soldered or otherwise rigidly fastened at one end as at 30to the screw shell contact and carrying at its other end thebinding-terminal 31 set withinthe terminal recess 82 at one side of thebody.

The switch mechanism includes as the operating elcmentthereof the usualpull chain 83 connecting at one end with the rotor 1% of tliehousedswitch assembly and its free running' portioirbeing adapted for guidanceat either side of the rounded division lug 34 of a divide formationapart therof on each of the body sections 22 so that when the saidsections are matched a chain guiding opening 35'is formed at the innerside of the said lug and a chain guiding groove 36 is formed at theouter side ofthe said lug. By reason ofthis construction the pull chain33 may be directed in either of several directions as indicated by thefull and dotted lines in Fig, 4: of the drawings according to theposition and requirements; for the socket in any'particular location.

In one of the preferred applications of the invention, shown inFig. 9 ofthe drawings, the practical utility of the retainer and attachmentmember is emphasized. This member is preferably, as shown, in the formof a bracket or yoke'and it provides a combined means for holding thetwo porcelain parts of the socket'together, and also as an attachment.or mounting means for mounting and supporting the deviceitself.Referring'to the illustration of Fig. 9 showing this dual function ofthememberR it will be seen from that figure that the entire pull switchsocket is intended to be entirely housed within the candle-shell37'suitably carriedby the fixture or wall plate 38 and in thisfparti'cular application be provided with a bottom rounded end portion39 upon which threaded opening!) in the cross-piece of the bracket oryoke R and passing through and engaging a perforated and shoulderedclamping cap 41, the said cap 41 and the candle-shell 37 being ofporcelain or other insulating material. With this construction the chain33 operates directly through the hollow screw 40 in line with thelongitudinal axial center of the device. The chain is provided at itslower end with the usual pull knob 42 of a suitable form.

From the foregoingit is thought that the construction, action andadvantages of the invention as herein described, will be readilyunderstood without further description and it will also beunderstoodthat changes in the form within the scope of theinvention willbe resorted to without departing from the invention. 7

1. A pull switch candelabrum socket, including a separable two-partbody, a screw shell having a direct interlocking engagement with the twosections of the body at one end, a combined fixture attaching bracketand'body section holding means engaged with the sections of the body atthe opposite end, and a switch carried by the body.

2. In a pull switch candelabrum socket, a separable two-part socketbody, a screw shell contact directly interlocking with the body by theact of assembling the body therewith, a combined attaching bracket andretaining device holding the body sections together, and a pull switchmechanism carried by one of the body sections.

3. A pull switch candelabrum socket, including in its organization aseparable twopart socket body made of insulating material, said bodybeing recessed and provided at one end with a division lug forming achain guiding opening and chain guiding groove respectively at oppositesides thereof and communicating with a recess of the body, and a pullswitch mechanism housed within the body and including a rotor and a pullchain adapted to be directed through either the said chain guidingopening or through the said chain guiding groove.

4. In a pull switch candelabrum socket, a separable two-part bodysocket, a screw shell contact directly interlocked with the body by theact of assembling the body therewith, a combined attaching bracket andretaining device holding the body sections together at one end and apull switch mech anism carried solely by one of the body sections.

In testimony whereof I hereunto afiix my signature.

CARL M. PETERSEN.

